Whether they are saved or not will be determined at the end of their faith, when their life is over and they give an account of their life at the judgment.
Your statement contradicts Eph 2:8-9 's message.
Eph 2:8~~For by grace you have been saved through faith; and that not of yourselves, it is the gift of God;
"you have been saved" should read in our English as," you being saved in the past you continue on being saved now and you are saved forever and ever." It is a dogmatic and unquestionable truth from the words perspective.
It is what is called a periphrastic perfect in the Koine Greek and is one of the most powerful and forceful phrases in the Koine Greek. It is when the writer cannot get all the details and the importance of the details in one verbal form so the writer uses 2 verbal forms to get the importance of the statement across to the readers. It offers NO loopholes for the reader.
"saved" is the Intensive perfect/passive/participle of sozo in the Greek. the intensive perfect says, "the Action(saved) is a completed action and continues on forever and forever."
"you have been" is present/active/indicative of eimi. and the present tense says that ," the Action(saved) continues on in the present.
If conditional security is true. Show the readers that John 5:24 and Eph 2:8 do not prove eternal security.
8 For by grace you have been saved
through faith, and that not of yourselves; it is the gift of God, 9 not of works, lest anyone should boast.
Ephesians 2:8-9
If you believe the Gospel and repent, then you are saved. The question is,
will your faith continue to the end or
will you deny Him.
If we endure, We shall also reign with Him. If we deny Him,
He also will deny us.
2 Timothy 2:12
and again -
But whoever denies Me before men,
him I will also deny before My Father who is in heaven. Matthew 10:33
You must continue in the faith and endure to the end to be saved.
The end of your faith is the salvation of your soul, not the beginning of you faith.
20 But he who received the seed on stony places, this is he who hears the word and immediately receives it with joy; 21 yet he has no root in himself,
but endures only for a while. For when tribulation or persecution arises because of the word, immediately he stumbles.
12 For whoever has, to him more will be given, and he will have abundance; but whoever does not have,
even what he has will be taken away from him. Matthew 13:12
and again -
6 but Christ as a Son over His own house,
whose house we are if we hold fast the confidence and the rejoicing of the hope firm to the end. Hebrews 3:6
and again -
12 Beware, brethren,
lest there be in any of you an evil heart of unbelief in departing from the living God; 13 but exhort one another daily, while it is called "Today," lest any of you be hardened through the deceitfulness of sin. 14 For we have become partakers of Christ
if we hold the beginning of our confidence steadfast to the end. Hebrews 3:12-14
lest there be in any of you an evil heart of unbelief in departing from the living God;
...if we hold the beginning of our confidence steadfast to the end.
If a person employs their free will to depart from the faith and are moved away from the hope of the Gospel message, then they no longer have a faith that will ensure their salvation.
1 Now the Spirit expressly says
that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons, 2 speaking lies in hypocrisy, having their own conscience seared with a hot iron,
1 Timothy 4:1-2
and again -
3 Let no one deceive you by any means; for that Day will not come unless
the falling away comes first, and the man of sin is revealed, the son of perdition...
2 Thessalonians 2:3
and again -
4 For it is impossible for those who were once enlightened, and have tasted the heavenly gift, and have become partakers of the Holy Spirit, 5 and have tasted the good word of God and the powers of the age to come, 6 if they fall away, to renew them again to repentance, since they crucify again for themselves the Son of God, and put Him to an open shame. 7 For the earth which drinks in the rain that often comes upon it, and bears herbs useful for those by whom it is cultivated, receives blessing from God; 8
but if it bears thorns and briars, it is rejected and near to being cursed, whose end is to be burned. Hebrews 6:4-8
Ephesians 2:8 teaches us that it is by grace through faith you have been saved, not of works.
The main point is that you must employ your faith to be saved.
If you decided to employ your faith towards other religions or the law, or even choose not to employ your faith any longer, then in the end if you have not repented, then it is certainly possible for a person to lose what they once had.
Now it is up to you to explain why all these scriptures don't mean what they say.
Stating Ephesians 2:8, one scripture taken out of context just won't do it.
JLB